CVE-2026-31072

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-19. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The JSONSerializer and CBORSerializer in APScheduler (all versions including 3.10.x and 4.0.0a5) are vulnerable to Remote Code Execution (RCE) via Insecure Deserialization. The unmarshal_object function allows for arbitrary class instantiation and state injection by dynamically importing modules and calling __setstate__ on any class available in the Python environment. An attacker can exploit this by submitting a specially crafted JSON or CBOR payload to an application using these serializers

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
52.5%
KEV
Not listed

Published

May 19, 2026

Last Modified

June 30, 2026

Advisory Details (5)

Auto-updated Jun 30, 2026
Patch available. Sources: redhat.
redhat
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31072.json
generic

CVE-2026-31072 · GitHub

https://gist.github.com/nedlir/11fb77f35a59cbba73392a086b02a9c6
redhat

2479907 – (CVE-2026-31072) CVE-2026-31072 apscheduler: APScheduler: Remote Code Execution via Insecure Deserialization

https://bugzilla.redhat.com/show_bug.cgi?id=2479907
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-31072
generic

GitHub - agronholm/apscheduler: Task scheduling library for Python · GitHub

https://github.com/agronholm/apscheduler

Vendor Advisories for CVE-2026-31072(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
pipapscheduler—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
apscheduler4.0.0a1 ... 4.0.0a6 (6 versions)——

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 157× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 305 total refreshes for this CVE.

  1. 2026-07-08 15:15 UTCEPSS rescore
  2. 2026-07-07 13:46 UTCEPSS rescore
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
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  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 06:31 UTCEPSS rescore
  9. 2026-07-01 15:06 UTCEPSS rescore
  10. 2026-06-30 23:22 UTCEPSS rescore
  11. 2026-06-29 20:53 UTCEG score recompute
  12. 2026-06-29 20:53 UTCGHSA enrichment
  13. 2026-06-29 14:06 UTCEPSS rescore
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  15. 2026-06-28 14:07 UTCEPSS rescore
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  17. 2026-06-28 12:31 UTCEG score recompute
  18. 2026-06-28 12:31 UTCGHSA enrichment
  19. 2026-06-28 08:39 UTCEG score recompute
  20. 2026-06-28 08:39 UTCGHSA enrichment
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-28 04:50 UTCEG score recompute
  24. 2026-06-28 04:50 UTCGHSA enrichment
  25. 2026-06-28 00:51 UTCEG score recompute
Show 75 more
  1. 2026-06-28 00:51 UTCGHSA enrichment
  2. 2026-06-27 20:25 UTCEG score recompute
  3. 2026-06-27 20:25 UTCGHSA enrichment
  4. 2026-06-27 12:28 UTCEG score recompute
  5. 2026-06-27 12:28 UTCGHSA enrichment
  6. 2026-06-27 07:36 UTCEG score recompute
  7. 2026-06-27 07:36 UTCGHSA enrichment
  8. 2026-06-27 03:08 UTCEPSS rescore
  9. 2026-06-26 19:47 UTCEG score recompute
  10. 2026-06-26 19:47 UTCGHSA enrichment
  11. 2026-06-26 03:51 UTCEG score recompute
  12. 2026-06-26 03:51 UTCGHSA enrichment
  13. 2026-06-25 20:55 UTCEG score recompute
  14. 2026-06-25 20:55 UTCGHSA enrichment
  15. 2026-06-25 17:00 UTCEG score recompute
  16. 2026-06-25 16:59 UTCGHSA enrichment
  17. 2026-06-25 13:49 UTCEPSS rescore
  18. 2026-06-25 13:49 UTCEPSS rescore
  19. 2026-06-24 14:05 UTCEPSS rescore
  20. 2026-06-23 21:33 UTCEPSS rescore
  21. 2026-06-23 21:33 UTCEPSS rescore
  22. 2026-06-22 14:25 UTCEPSS rescore
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  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 14:56 UTCEPSS rescore
  26. 2026-06-21 01:59 UTCEPSS rescore
  27. 2026-06-19 19:25 UTCEPSS rescore
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  29. 2026-06-18 17:52 UTCEPSS rescore
  30. 2026-06-18 17:52 UTCEPSS rescore
  31. 2026-06-18 03:50 UTCEG score recompute
  32. 2026-06-18 03:49 UTCGHSA enrichment
  33. 2026-06-17 23:57 UTCEG score recompute
  34. 2026-06-17 23:57 UTCGHSA enrichment
  35. 2026-06-17 20:06 UTCEG score recompute
  36. 2026-06-17 20:06 UTCGHSA enrichment
  37. 2026-06-17 17:53 UTCEPSS rescore
  38. 2026-06-17 15:36 UTCEG score recompute
  39. 2026-06-17 15:36 UTCGHSA enrichment
  40. 2026-06-17 11:45 UTCEG score recompute
  41. 2026-06-17 11:45 UTCGHSA enrichment
  42. 2026-06-17 05:00 UTCEG score recompute
  43. 2026-06-17 05:00 UTCGHSA enrichment
  44. 2026-06-17 00:42 UTCEG score recompute
  45. 2026-06-17 00:42 UTCGHSA enrichment
  46. 2026-06-16 20:52 UTCEG score recompute
  47. 2026-06-16 20:51 UTCGHSA enrichment
  48. 2026-06-16 17:52 UTCEPSS rescore
  49. 2026-06-16 10:50 UTCEG score recompute
  50. 2026-06-16 10:50 UTCGHSA enrichment
  51. 2026-06-16 06:41 UTCEG score recompute
  52. 2026-06-16 06:41 UTCGHSA enrichment
  53. 2026-06-16 02:50 UTCEG score recompute
  54. 2026-06-16 02:50 UTCGHSA enrichment
  55. 2026-06-15 23:00 UTCEG score recompute
  56. 2026-06-15 23:00 UTCGHSA enrichment
  57. 2026-06-15 17:49 UTCEPSS rescore
  58. 2026-06-15 16:09 UTCEG score recompute
  59. 2026-06-15 16:08 UTCGHSA enrichment
  60. 2026-06-15 05:54 UTCEG score recompute
  61. 2026-06-15 05:54 UTCGHSA enrichment
  62. 2026-06-15 02:05 UTCEG score recompute
  63. 2026-06-15 02:05 UTCGHSA enrichment
  64. 2026-06-14 23:18 UTCEPSS rescore
  65. 2026-06-14 22:15 UTCEG score recompute
  66. 2026-06-14 22:15 UTCGHSA enrichment
  67. 2026-06-14 18:24 UTCEG score recompute
  68. 2026-06-14 18:24 UTCGHSA enrichment
  69. 2026-06-14 14:12 UTCEG score recompute
  70. 2026-06-14 14:12 UTCGHSA enrichment
  71. 2026-06-14 10:11 UTCEG score recompute
  72. 2026-06-14 10:11 UTCGHSA enrichment
  73. 2026-06-14 06:20 UTCEG score recompute
  74. 2026-06-14 06:19 UTCGHSA enrichment
  75. 2026-06-14 02:29 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-31072?
CVE-2026-31072 is a critical vulnerability published on May 19, 2026. The JSONSerializer and CBORSerializer in APScheduler (all versions including 3.10.x and 4.0.0a5) are vulnerable to Remote Code Execution (RCE) via Insecure Deserialization. The unmarshal_object function allows for arbitrary class instantiation and state injection by dynamically importing modules…
When was CVE-2026-31072 disclosed?
CVE-2026-31072 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31072 actively exploited?
CVE-2026-31072 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-31072?
CVE-2026-31072 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-31072?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31072, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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